What is the axle code for a 3:31 rear for LS-6

[blackls6]

What is the axle code for a 3:31 posi for LS-6 Chevelle?

[Ngtflyr]

Posi 3.31:1 is CRV

[SS427]

and CRU for non posi. Codes are all the same between the LS5/LS6.
Rick

[3macs1]

[ QUOTE ]
and CRU for non posi. Codes are all the same between the LS5/LS6.
Rick

[/ QUOTE ]
Hi Rick:
I was not aware ls-5 and ls6 used the same code. But now it makes sense why someone cloning a ls-6 wanted my spare ls-5 rearend so bad. I donot sell and kept telling him it would not be the right code. LOL Oh boy. Still learning after all these years.

[SS427]

All the 454 Chevelles in 70 used a special rear end (heavy duty ring and pinion), a unique pinion flange and driveshaft. That is why it is so easy to clone an LS-6 if you had an LS-5 to start with. The engine and tach are really the only thing different between the two.
Rick

[Stefano]

And Fuel return line, some times.

[blackls6]

What is unique about the pinion flange and drive shaft?